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MHRoC-Rathalos Art 001
English Name: Rathalos
Japanese Name: リオレウス
Romaji: Rioreusu
Korean Name: 리오레우스
English Title: King of the Skies, King of the Heavens
Japanese Title: 火竜
Nicknames: Los, King
General Information
Species: Flying Wyvern
Element/s: Fire Fire
Ailment/s: StatusEffect04 Stun
StatusEffect-Poison Poison
Status Effect-Fireblight MH4 Icon Fireblight (3rd Gen onwards)
Status Effect-Severe Fireblight MH4 Icon Severe Fireblight (3rd Gen onwards)
Weakest to: Ice Ice (2nd Gen)
Water Water (2nd Gen)
Dragon Dragon (2nd Gen onwards)
Thunder Thunder (3rd Gen)
Weakness Sign: Limping
Signature Move: Sky attack and fireball
Habitats: Forest and Hills, Deserted Island, Volcano, Gorge, Old Swamp, Old Volcano, Tower, Tower Top, Highland, Ruins Field, Unknown Great Forest, Underground Volcano, Heavenly Mountain
Monster Size: Gold Crown Large 2248.6 / 2143.4 (MH3)
Gold Crown Small 1140.6
Monsters in Relation: Rathian, Azure Rathalos, Silver Rathalos, Zerureusu
Generation: First

Rathalos are large-sized Flying Wyverns, with their most notable features being their crimson appearance and huge fire patterned wings.

MH4-Rathalos Render 001


Rathalos have a typical draconic type body. It is red with slightly tangerine overrides all over the skin. Rathalos are most notably known for it's spiky features along on the wing edges, head, 'knees', back, tail and tail tip. Rathalos has a ironic facial feature. It's mouth looks like a beak which closely 'bridgeless' through the tip of the snout to the forehead. Beside the jaws, it has a pair of 'mandibles' which closely resembles the ones own by the ants and termites. If observed closely, the scales on Rathalos' wings closely resembles the scale pattern of a butterfly's wing. Under the wings and the body until the tip of the tail, it has some black markings on it. Rathalos' wings reach from the wing tip until the first part of the tail. Rathalos' legs closely resembles of an avian's rather than a dragon's. It has 3 frontal digits while a single digit at the back. It's tail, is slightly 'bloated' at the cuttable part. There are 3 pairs of spikes protrudes on each sides while a pair of notably shorter spikes at the bottom end with the longer spike with two smaller spikes protrudes from the tail part.


Rathalos have a whole variety of attacks, ranging from burning hunters with a set of one to three fireballs from the air, to their incredibly deadly talon lunge, which leaves hunters both poisoned and stunned.


Rathalos spend most of their time in the sky. This ability to live in the strangest and harshest of climates makes the Rathalos renowned far and wide as the King of the Skies.

Rathalos inhabit many regions; they are most commonly found in the Forest and Hills, along with the Volcanic region and the Swamp region. In Monster Hunter 3 they can be found in the Volcano and Deserted Island.

Other Non-Subspecies Froms

Hard Core (HC) Rathalos

MHFG-HC Rathalos Render 001 (Edited)

Appears older with larger muscle mass and more developed spikes. New behavior includes an attack where it instantly jumps into the air and does its famed poison claw attack instantly even if you are as far away as a lower part of a cliff in the Gorge it will reach you.

Game Appearances

Chronological Appearances
First US / EU Appearance: First JP Appearance: Latest Appearance:
Logo-MH1 (2004) Logo-MH1 (2004) Logo-MH4U (2015)

In-Game Description

Monster Hunter Freedom 2 / Monster Hunter Freedom Unite
MHFU-Rathalos Icon Male wyvern that keeps a nest and patrols its patch of territory from the air in search of prey. Its claws are filled with a poison that weakens its quarry.
Monster Hunter 3
MH3-Rathalos Icon Terrible wyverns called the 'Kings of the Skies'. Together with Rathian, they stake wide territories centered around their nests. Rathalos descend on invaders from the sky, attacking with poison claws and breath of fire.
Monster Hunter Portable 3rd
MHP3-Rathalos Icon 天空の王者と呼称され、畏れられる飛竜。雌火竜と共に巣を中心とした広いテリトリーを形成し、空から監視する。テリトリーに侵入した者には優れた飛行能力で上空から急降下し、毒を含む強力な爪で襲い掛かってくる。火を吐くことから “火竜” と呼ばれる。
Monster Hunter 3 Ultimate
Ratalos 3U Icon Terrible wyverns called the 'Kings of the Skies'. Together with Rathian, they stake wide territories centered around their nests. Rathalos descend on invaders from the sky, attacking with poison claws and breath of fire.
Monster Hunter 4
MH4-Rathalos Icon 天空の王者と呼称され、畏れられる飛竜。雌火竜と共に巣を中心とした広いテリトリーを形成し、空から監視する。 テリトリーに侵入した者には優れた飛行能力で上空から急降下し、毒を含む強力な爪で襲い掛かってくる。 火を吐くことから”火竜”と呼ばれる。
Threat Level (危険度): ★★★★★
Monster Hunter Frontier G
MHFG-Rathalos Icon (?)

Breakable Parts

Tail (Sever)
Wings (x2)

Element/Status Effectiveness

Information taken from

Hitzone Cut. D. Imp. D. Shot D. Fire Water Thunder Ice Dragon
Head 75 70 60 0 15 20 15 35
Neck 44 40 20 0 10 15 10 20
Back 25 30 20 15 10 15 10 25
Stomach 44 40 15 0 5 20 5 10
Tail 30 30 25 0 5 10 5 25
Wings 25 20 25 0 10 15 10 20
Legs 30 25 45 0 5 10 5 10

Damage Effectiveness

For the damage formula (how it's calculated), hitzone charts, Rathalos info and more click the following links: Monster Hunter 3 Damage Formula or Monster Hunter 3 Hitzone Charts. Images created by Inkoseh.

Element Damage
Hitzone Fire Water Thunder Ice Dragon
Head 0 15 20 15 35
Neck 0 10 15 10 20
Back 15 10 15 10 25
Stomach 0 5 20 5 10
Tail 0 5 10 5 25
Wing 0 10 15 10 20
Foot 0 5 10 5 5
Average 0 10 15 10 20
Status Effect
Poison Paralysis Sleep Fatigue Knockout
Initial Tolerance 180 180 180 180 150
Tolerance Inc. (max) +100 (580) +110 (620) +100 (580) +75 (480) +100 (550)
Tolerance Recovery 5 / 10 sec 5 / 10 sec 5 / 10 sec 5 / 10 sec 5 / 10 sec
Duration 60 sec 10 sec 30 sec 0 10 sec
Damage 150 + 5 0 0 200 0

Item Effectiveness

Item Effect
Item Name Able Effectiveness Duration Notes
1st time 2nd time
Pitfall Trap ★★★
Shock Trap ★★★
Flash Bomb ★★★ Only works if monster is facing the flash bomb when it goes off. Also works to free a pinned hunter.
Sonic Bomb x ☆☆☆
Dung Bomb ★★★ Used to get out of Pin Attack and will (sometimes) make him change area.
Meat ★☆☆ Only works when the monster has not noticed the hunter.


  • Rathalos may use his dive bomb attack as the very first attack during a hunt(though this happens quite rarely).
  • So far Rathalos have appeared in every single Monster Hunter game in the series, even including the spin-off: MH Diary: Poka Poka Felyne Village.

  • Just as with Rathian, Rathalos can pin down a hunter and restore lost Stamina, this can be stopped by running and tripping. Rathalos is now weakest to Dragon, followed by Thunder. Also, like Rathian, breaking the wing(s) does not stop its aerial attacks or travel. It can now recover Stamina by eating a medium-sized Herbivore, mainly Aptonoth, Slagtoth, and Gargwa.

  • It can have its back broken, due to the mounted attacks feature.
  • Rathalos gains some new moves.
    • During Rathalos' dive bomb attack, Rathalos will now breathe fireballs during that attack, so the hunter can not stand still and heal or sharpen like in generations before.
  • It can also become infected by the Feral Wyvern Virus.

  • Rathalos can be a pet.

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